Yeh is teamed with Armstrong Consultants, Inc. on this project at Canyonlands Field Airport in Moab, Utah. Yeh is providing geotechnical engineering recommendations and subsequent quality assurance / acceptance testing for the Taxiway A and Terminal Apron Reconstruction Project. In addition to Canyonlands, Yeh has 2020 contracts for engineering and construction services at San Luis (Alamosa), Cortez, Garfield County (Rifle), Rangely, and Grand Junction Regional Airports. We are looking forward to a busy year on the aviation front!

Over the last 18 years, Yeh has provided on-call geotechnical engineering, pavement design, materials testing and construction inspection services for several projects at Red Rocks:

· Visitor Center and restroom facilities

· Renovation of the amphitheater seating area

· Condition review of the rock features and the installation of mitigation elements

· Pavement Design for several parking areas

· Utility building

· Loading docks

· Soil nail retaining walls

Yeh provided geotechnical engineering services for the east and westbound tunnels.

Our services include a complete tunnel geotechnical investigation, portal rockslope design, rockfall protection, and deformation monitoring during widening. Additional services for this complex project included:

· Tunnel geotechnical data report

· Portal barrel design and portal rockfall protection design

· Portal rock cut design and support

· Tunnel Instrumentation

· I-70 retaining walls and foundations

Yeh also assisted in the roadway construction inspection, tunnel construction inspection and materials testing.

The Southeast Rail Line Extension added 2.3 miles of light rail along I-25 from Lincoln Station, through the new Lone Tree City Center, to RidgeGate Parkway. The project included an end-of-line station, a five story parking structure with 1,300 parking spaces, bus transfer, and Kiss-N-Ride facilities. Yeh provided geotechnical engineering for

design, along with construction quality inspections and materials testing for every aspect of construction including the retaining walls, three bridges, stations, parking structure, at-grade crossing, roads, and parking facilities.